CVE-2021-29964

Mozilla: Out of bounds-read when parsing a `WM_COPYDATA` message

Published Jun 24, 2021 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Description
A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process incorrectly, leading to an out-of-bounds read. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR < 78.11.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-16423 A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would process incorrectly, leading to an out-of-bounds read. *This bug only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 78.11, Firefox < 89, and Firefox ESR < 78.11.
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Aug 3, 2024, 10:24 PM
Reserved
Apr 1, 2021, 12:00 AM
Status
Modified
Published
Jun 24, 2021, 2:15 PM
Modified
Jun 17, 2026, 3:48 AM
Severity
Moderate
Public date
Jun 1, 2021, 12:00 AM